id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
1531	use ctypes.get_last_error instead of GetLastError to access Windows error code	davidsarah	daira	"We have some code in [source:src/allmydata/windows/fixups.py] and [source:src/allmydata/util/fileutil.py] that calls Windows API functions, and then calls !GetLastError if the API function fails. In theory, the Python interpreter could run code in-between on the same thread that changes the error code. See [http://bugs.python.org/issue1798].

(We don't have any code in Tahoe proper that calls C runtime library functions, so this issue only affects us for !GetLastError, not errno. It is somewhat less likely to happen with !GetLastError than with errno, at least in CPython, but still possible.)"	defect	closed	normal	1.11.0	code	1.9.0a1	fixed	windows error GetLastError magic-folder